I'm suprised no one mentioned this, but monk!
4. Beginning with a monk dip can be nice. It gives you the ability to use your dex with any weapon you're proficient with. For example, if Shadowheart started with a high dex and a level of monk instead of cleric, she'd be great with the spear without having to invest any points in strength. That way she could be sneaky, wise with cleric spells, and effective in martial combat. All of which a dark justiciar is supposed to be.
You ever have those days where you feel unseen? You talk to the world, but the world ain't listening.